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    won't turn when its cold

    My Yamaha 175hp seems to turn just fine when its warm, but when it gets cold, the engine won't turn. New steering cables installed, but does the same thing. My mechanic thinks that it might be corrosion, but he says that to really get at the spot, the head needs to be removed and its a big...
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    corrosion help

    My Yamaha 175hp appears to have corrosion in the gear that turns the engine. When it is really cold, the engine turns very hard. So hard that i broke my steering cable. can I flush out the grease and treat the corrosion without taking the whole engine a part? what should i do?
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    mercury to yamaha conversion

    I changed out a 1982 mercury 150hp 2 stroke to a 1991 175hp yamaha 2 stroke. Can I use a conversion kit and keep my ignition wire harness? Can I also put new throttle cables on, but use a conversion to keep my binnacle top mount? Thanks.
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    Very wet plugs on Merc 150hp Blackmax

    I have been trying to get this '82 Blackmax working for 2 years. It boggs down at wot. I have replaced most of the electrical components and my "master merc mechanic" can't find any problems with the electrical system. The carbs have been cleaned and floats set by the mechanic. The plugs get...
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    Plugs constantly foul

    Merc 150hp v6 outboard that starts and runs. However, the plugs get very wet with dark oil after just seconds of idle or after running at WOT. After a while, the engine begins to bog down and I'm assuming that this fouling of plugs is the reason. good spark on all 6 plugs when clean. good...
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    throttle compatibility

    Please help me understand if my 1982 Mercury Outboard Blackmax V6 150 hp is compatible with an MCC 4501/4502 Gen II remote throttle?
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    throttle compatibility

    Can someone tell me if I can use an MCC 4501 4502 GenII Series throttle control with my outboard BlackMax V6 150hp?
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    steering cable help needed

    I am trying to remove the center console of a Whaler Outrage 20'. I tried to disconnect the steering cables under the helm, but only one of the cables came completely disconnected. The other cable is still attached with the internal cable wire. Was I supposed to do this or did i break the...
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    Merc v-6 150 blackmax (electrical?)

    I tried to solve this issue last summer by myself and failed. my engine some times runs at 5200rpm and then drops to much lower rpm at WOT. it will drop to various lower rpms...sometimes 3000rpm and sometimes 2200rpm and even lower. it ran for a while at 4000rpm...its all over the place. the...
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    Question about Reed Block/Carbs

    I have gas still coming out of my lower port carb on a Merc V-150 (1982). The gas is coming up from the bowls and spilling into the carb. So here's the question: if the reed block or reed valves are faulty, then what is the affect on my engine and carbs? Why is gas spilling out of my carb...
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    gas gushing out of carbs - boggs down

    Blackmax 150hp V6. Gas is gushing out of my bottom port side carb and gas seems to be fluttering in a few other carbs. Should I work on the carbs/floats or is this a problem with my reeds? Engine has bewildered 2 master merc mechanics because it boggs down at WOT and seems to be running...
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    Need help with Merc V150

    I have written in before. This is a 1984 V6 150hp merc outboard. She boggs down at WOT. I have a new gas tank, new lines, fuel pump rebuilt, clean carbs and jets. A mechanic did a diagnostic on Friday on the electrical for me and told me that the compression is 125 on 5 of 6 cylinders and...
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    getting closer to solving bogging down problem

    Merc 2 stroke 150hp V6 1982: this engine has been bogging down to about 1,300rpm at WOT. I rebuilt the fuel pump, replaced tank and line to the engine, using 89 octane new gas. Laddies suggested that I check the spark on each plug, but I don't know how to do that at WOT, so I haven't done it...
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    dies at WOT

    Merc '86 BlackMax 150hp starts and idles great. At WOT she dies down to about 1200rpm. I pump the bulb and it has no effect. However, if I hold down the choke, then it revs up. With the choke held in, it has hit as high as 4,500rpm. As soon as the choke is released, the engine dies back...
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    water in exhaust

    I have an '86 150hp blackmax. It seems that a lot of water is coming out of the exhaust. There is also water coming out of the tell tale that has pretty good flow and is not very hot. Do I have a problem with an exhaust seal or is this normal?
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